Image acquiring terminal and image acquiring method

Abstract

The invention provides an image acquiring terminal. The image acquiring terminal comprises a first camera module, a second camera module and a processing module. The first camera module and the second cameral module are used for finding views in the same scene at the same time. The resolution ratio of the output image of the first camera module is larger than that of the output image of the second camera module. The processing module is used for carrying out detecting and analyzing according to the contrast ratio of different frames of the images and controlling the second camera module to automatically carry out focusing to determine the focusing point. The processing module is further used for determining the focusing point of the first camera module according to the information of the focusing point of the second camera module, controlling the first camera module to directly carry out focusing according to the determined focusing point and acquiring the image at the focusing point. The invention further provides an image acquiring method. The image acquiring terminal and method can solve the problem that due to the fact that an existing single lens image acquiring module outputs an image with the high resolution ratio, the focusing speed is low.

Description

technical field [0001] The present invention relates to the field of terminal shooting, and in particular to an image acquisition terminal and an image acquisition method capable of fast focusing. Background technique [0002] Auto Focus (Auto Focus) is to use the principle of object light reflection, the reflected light is received by the sensor CCD on the camera, and the method of driving the electric focusing device to focus through computer processing is called auto focus. Contrast method for focusing is to achieve automatic focus by detecting the contour edge of the image. The sharper the edge of the outline of the image, the greater its brightness gradient, or the greater the contrast between the scene and the background at the edge. Conversely, for an out-of-focus image, the contour edge is blurred, and the brightness gradient or contrast decreases; the farther out of focus, the lower the contrast. [0003] In the existing single-camera focusing system, the automati...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an image acquisition terminal and an image acquisition method to solve the problem of slow focusing speed in the prior art

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